<template>
	<div>
		<!-- 面包屑导航区 -->
		<el-breadcrumb separator="/">
		    <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
		    <el-breadcrumb-item>数据统计</el-breadcrumb-item>
		    <el-breadcrumb-item>数据报表</el-breadcrumb-item>
		</el-breadcrumb>
		
		<!-- 卡片视图区域 -->
		<el-card>
			<div id="main" style="width: 600px;height:400px;"></div>
		</el-card>
	</div>
</template>

<script>
//导入echarts
import echarts from 'echarts'
import _ from 'lodash' 
	
export default {
	data() {
		return {
			options: {
			          title: {
			            text: '用户来源'
			          },
			          tooltip: {
			            trigger: 'axis',
			            axisPointer: {
			              type: 'cross',
			              label: {
			                backgroundColor: '#E9EEF3'
			              }
			            }
			          },
			          grid: {
			            left: '3%',
			            right: '4%',
			            bottom: '3%',
			            containLabel: true
			          },
			          xAxis: [
			            {
			              boundaryGap: false
			            }
			          ],
			          yAxis: [
			            {
			              type: 'value'
			            }
			          ]
			        }
		}
	},
	async mounted() {
		// 基于准备好的dom，初始化echarts实例
		var myChart = echarts.init(document.getElementById('main'))
		
		const {data: res} = await this.$http.get('reports/type/1')
		
		if(res.meta.status !== 200) {
			return this.$message.error('获取折线图数据失败')
		}
		
		// 指定图表的配置项和数据
		const result = _.merge(res.data, this.options)
		
		// 使用刚指定的配置项和数据显示图表。
		myChart.setOption(res.data)
		
	}
}
</script>

<style lang="less" scoped>
	
</style>
